Asphalt distributor



July, 1938.,

y w. M. JAGQE.

ASPHALT DISTRIBUTOR Filed Jim@ 14, 1934 5' sheets-sheet 1 x f t 1: 4

July'5, 1938.

' I ASPHALT DISTRIBUTOR v Filed June 14, 1954 5 Sheets-Sheet 3 PatentedJuly 5, 1938 l PATENT ori-ica 2,123,156 ASPHALT DISTRIBUTOR Walker M.Jage, Denton, Tex., assigner of onehalf to Grover S. Campbell, Dallas,Tex.

lAlgiplcatioirl June 14, 1934, Serial No. 130,676

13 Claims.

provide a distributor inwhich the ilow of material may be starteduniformly, and in which the flow may be stopped uniformly withoutdripping.

Another object of my inventionis to provide a novel spray bar for usewith fluid distributors in whichstarting and stopping of the flow ofmaterial will` be uniform throughout the length of the bar.

A further object of my invention is the provision of a novel valve anddistributing system for use in a distributing device of the above men.tioned character.

Other objects and advantages of my invention will be apparent during thecourse of the following description.

In the accompanying drawings which form a part of this specification,and wherein like characters of reference denote like parts throughoutthe same,

Figure 1 is a rear elevation of a tank truck.

having my-invention applied thereto,

VFigure 2 is a side elevation yof the Yrearward portion thereof,

Figure 3 is a detail elevation of the valve and distributing system,

Figure 4 is an elevation o f one of my novel spray bars, l

Figure 5 is an edge view thereof, on a larger scale,

Figure 6 is an elevation of my improvedfdistributing valve,

Figure 'l is a cross sectional line 'I-fl of Figure 6,

Figure 8 is an edge elevation of the valve,

Figure 9 is diagrammatic view of the valve and distributing systemshowing the spray position of the Valve, and the path of the spraymaterial being illustrated by arrows,

`Figure 10 is a similar view illustrating the iilling and suckingposition of the valve,

Figure 11v is a similar view illustrating the drain position of thevalve,

view taken on the Figure 12 is a similar view showing the wash positionof the valve, and,` l

Figure 13 is a side elevation of the conical `strainer used inconjunction with the valve.

,In the drawings, wherein for the purpose of illustration' is shown apreferred embodiment of my invention, the numeral l5 designates thesource of fluid supply which is the tank of a truck having a compartmenti6 at the rear ofthe tank for the reception of the valve, pump anddistributing system, and having a rear platform IT projecting rearwardlyof the rear wheels of the truck as seen in Figure 2. An auxiliary engineI8 is mounted upon the rear platform Il and is provided with atransmission I8 of any suitable' `construction controlled by a lever 20and having a driving shaft to which is connected a sprocket wheel or thelike 2l. A chain or belt 22 conv nects sprocket wheel 2l with a sprocketwheel on the shaft 23 of the pump 2li., The pump 2il`may be of anysuitable construction and is arranged within compartment I8, as lshownin Figure 2.

Below pump 24 and. within compartment I6 is arranged a generallycylindrical Valve casing 25 having a cylindrical strainer casing 26bolted to one end thereof and communicating at one end with the open endof the valve casing. The lower end of the pump 2li communicates withstrainer casing 26 through pipe 2l. A conical strainer 28 is arrangedwithin the strainer casing with its large `open end facing the valvecasing and its pointed end abutting against the closed endvoi" casing2-, as seen in Figures 9 to `12. All material passing through Valvecasing 26 to pump 24 must of necessity pass through the mesh of thestrainer 28. A cylindrical valve body 29 is rotatably arranged withinthe casing 25 and extends for the length thereof, abutting at one endagainst the adjacent end ofthe strainer casing 26V as seen in Figures 9to 12. The valve body' 29 is of tubular formation vhaving itsoppositeend closed and provided with an axial shaft 30 extending out of thecasing 25 for a' substantial distance. A

cap plate 3l has an opening to receive shaft 3l) and is bolted to thecasing 25 to secure the valve vbody 29 therein.

The valve body 29 has two transverse partitions 32 dividing the valveinto three compart ments, the compartment adjacent the closed end of thevalve body being smaller than the other two compartments. The valvecasing-25 isprovided on its upper portion with a port chamber 33extending from the closed end of the valve Vbody to the second partition32,`.and having a partition 34 in line with the first valve partition32. A port chamber 35 is arranged on the lower side of the valve casingand extends throughout the length of the valve casing. A partition 38 isarranged in the chamber 35 and is located at a point intermediate of thetwo center valve body partitions 32. It will be seen that the partitionsdivide each of the port chambers 33 and 34 into two compartments, asshown in'Figures 9 to 12. The compartment of chamber'33 nearest theclosed end of valve body 29 is connected to tankv I5 by conduit 31 whilethe other compartment of chamber 33 is connected to pump 24 by conduit38. A conduit 39 connects the compartments of port chamber 35 and a pairof spray bars 48 communicate with conduit 39 by means 'of spaced pipes4I having suitable valves 42 arranged therein. A valved supply pipe 43communicates with conduit 39 and is adapted to be connected to asourcepf uid supply when thetank I5 is to be lled.

A conduit 44 connects the tank I5 with a port 45 in the valve casing 25adjacent the open end of the valve body and admits the oil, asphalt orother material to the valve in the operating or spraying position of thevalve, indicated in Figure 9. A suitable nozzle pressure control valve4G is arranged in conduit 39, as in Figures 9 to 12, or in conduit 31,as indicated in Figure 3, for controlling the pressure in the spraypipes 49.

The valve casing 25 is provided with suitable ports 41 adapted toconnect the compartments of the port chambers with the valve bodycompartments when in registration with ports in the valve body. Eachcompartment of the valve body is provided with suitable ports 48 in theperiphery of the valve body as shown in Figures 6 and '1. The valve bodymay be rotated within the casing in any suitable manner. I have providedan operating wheel 49 carried by a shaft 50 journaled 4for rotation inthe compartment I6, the wheel 49 being arranged exteriorly of thecompartment. A chain or belt 5I connects sprocket wheels on shaft 50 andon the valve shaft 30 so that rotation of wheel 49 will serve to rotatethe valve body Within v its casing. A stop device 52 of any suitableconstruction may be provided to control operation of v Wheel 49.

The valve 29 has four operative positions as indicated in Figures 9 to12. When moved to the running or spraying position indicated in Figure 9the material is drawn by the pump 24 through conduit 44 into the endcompartment of the valve, through the strainer casing to the pump,thence through conduit 38 to the middle valve compartment and to conduit39 under pressure of pump 24. When valves 42 are open, the materialpasses into spray bars under pressure, although some of the materialreturns through valve 46 to the other end compartment of the valve andback to the tank I5 through conduit 31. By adjusting choke valve 46which controls the return of material to the tank I5, pressure ofmaterial in the spray bars can be .increased or lessened at will. Thepath of the material through the valve and conduits is indicated by thearrows.

When it is desired to ll the tank I5, the valve is turned to theposition shown in Figure 10.

Valves 42 are closed, and a hose or the like from a source of supply isconnected to supply pipe 43, and pump 24 sucks material from the supplypipe through the end valve compartment into conduit 38 and through themiddle valve compartment to by-pass 52 which connects`the middle valvecompartment with conduit 31, as indicated by the arrows in this igure.yConduit 31 conducts the material to the tank I5.

An important feature of my invention is to utilize this fill position ofthe valve system to suck material. from the spray bars at the end of thespraying operation. Heretofore considerable diniculty has beenexperienced'due to the dripping of material from the'spray bars. Even.though the valves 42 are closed, dripping has been experienced. Bymoving, valve 29 into the filling or sucking position shown in Figure10, pump 24 will suck material from the spray bars and pipes back totank I5, and thereby prevent dripping from .the bars without reversingthe direction of pump 24.

When it is desired to drain the system the valve is turned to theposition shown in Figure 1l. In this position, ports from each valvecompartment are open, allowing material to drain from pump 24, conduits31, 38 and 52 and valve compartments to the conduit 39 and spray bars48. v

When it is desired to clean out the valve system the valve is turned tothe wash position indicated in Figure 12 and kerosene or other washfluid is admitted through supply pipe 43. Pump 24 circulates the Washfluid through the Valve compartments, port chambers and conduit 38, asindicated by the arrows.

The pump, valve and larger portion of the conduits are arranged withinthe chamber I8 which may be heated by suitable heaters such as indicatedat 53 in Figure 1 to prevent congealing of the asphalt or othermaterial.

While my improved valve system may be used with any of the conventionaltypes of spray bars,

I prefer to use the novel spray bar disclosed in Figures 4 and 5. Thespray bars are detachably secured to the conduit 39 by suitable clamps'53. The conduit 39 extends under the platform I1 to the rear thereofand turns backwardly towards the front of the truck so that the spraybars are located under the forward portion of platform Il as shown inFigure 2. The spray bars are two in number, being arranged in alignmenttransversely of the tank truck, as seen in Figure 1 and when not in use,they may be detached and hung at the sides of the truck. The valveswhich control the passage of materialthrough conduit 39 and into thespray bars may be operated by control levels 54 which extend through theplatform and are accessible to an operator standing upon-.the platformI1.'

The spray bars each consists of a tubular bar 55 closed at both ends. AU-shaped siphon tube 56 has the upper end of one of its legs connectedto the bar 55 adjacent the inner end thereof, while the other legr 51extends above the bar 55 and is adapted for detachable connection withthe conduit 39. The elbow portion of the Siphon tube extends below thelower portion of the bar 55 for a substantial distance as seen in Figure5. Pipes 58 extend from the low point of the siphon to the extreme endsof the bar 55. Although the use of the pipes 58 is preferred, for thereasons hereinafter pointed out, they may be dispensed with if desired,and the juncture of the Siphon tube and bar spread out, as in Figure 1,to facilitate flow of material into and out of the bar. The use of -thepipes 58 is indicated in Figures 2, 4 and 5.

The twotypes of spray bars are obviously interchangeable, their otherfeatures being identical.

Spaced along the length of the bars 55 are nozzles which consist ofinverted U-shaped pipes 59 of small diameter connected at one end to theupper portion of the bar 55 and extending laterally beyond the bar asseen in Figures 2.

and 5. Suitable removable perforated caps 60 are arranged in the ends ofthe nozzle pipes 59. When the valve A29 is moved to the sprayingposition shown in Figure 9 and the valves 42 opened, oil', asphalt orother uid is pumped through conduit 39 to siphon tubes 56, underpressure, and enters the spray bars at their lower ends, lling the barsfrom the bottom upwardly. The level of the liquid in the bars 55will'rise evenly, and as the nozzle pipes enter bars 55 at their tops,the liquid will start to ow from each nozzle cap simultaneously. When,the pipes 58 are used, they will conduct the liquid to the ends of thebars 55 so that the bars are filled froml both ends as well as fromtheir juncture with the siphon tube, thereby insuring simultaneousstarting of the spray nozzles. y

When the supply of liquid is cut off by operating valve 29 or valves 42,the liquid in the bars 55 will not iiow out of the nozzles due to thefact that they are suppliedfrom the tops of the bars. However, in orderto prevent any drip from the nozzles, the valve is moved to the fillingor sucking position shown in Figure l0, and the liquid is sucked fromthe nozzles and bars by pump 24. By reason of the fact that the elbowportion of the' siphon tube is the sump or low point in t-he system, theliquid will be sucked from the bars with ease, and the nozzle openingswill not break the seal or vacuum. When pipes 58 are employed, as inFigure 4, the 4liquid will also be sucked from the ends of the bars, andthere will therefore be no tendency for the liquid to hug the end wallsof the bars 55.

Although it is preferred to use the improved spray bars with a systemcapable of sucking the liquid from the bars, the novel construction ofthe bar may be relied upon to prevent objectionable dripping. The bars55 will remain lled when the spraying is stopped, and when spraying isresumed, the nozzleswill start simultaneously, and there will be no needto wait for the bars to fill.

While I have shown and described the preferred embodiment of myinvention, it is. to be understood that various changes in the size,shape and arrangement of parts may be resorted to Without departing fromthe spirit of my invention or the scope of the subjoined claims.

Having thus described my invention, what I claimand desire to protect byLetters Patent is: 1. In a device of the character described, a

`spray bar for liquidscomprislng an elongated hollow bar, means to admitliquid through the lower wall of said bar, and a plurality-of spraynozzles communicating with the upper portion of said bar through theupper portion thereof. 2. In a device of the character described, aspray bar for liquids comprising a substantially horizontal hollow bar,means to force liquid under pressure into said bar through the lowerwall thereof, and a plurality of spray nozzles communicating with saidbar through the upper Wall thereof.

3. In a device of the character described, a spray` bar for liquidscomprising a substantially horizontal hollow bar, means to admit liquidthrough the lower wall of said bar, a plurality of spray nozzlescommunicating with said bar through the upper Wall thereof, and means tosuck liquid from the bar and nozzles through the lower portion of saidbar,

4. In a device o f the character described, a spray bar for liquidscomprising a substantially horizontal hollow bar, a siphon tube communi-,eating with said bar through the lower wall thereof and extendingtherebelow, a plurality of spray nozzles communicating with said barthrough the upper wallv thereof, and means to admit liquid to saidsiphon tube.

5. In a device ofthe character described, a spray bar for liquidscomprising a substantially horizontal hollow bar, a siphon tubecommunieating with said bar through the lower wall thereof and extendingtherebelow, a plurality of spray nozzles communicating with said barthrough the upper wall thereof,means to admit liquid to said bar throughsaid siphon tube, and means to suck the liquid from said bar throughsaid siphon tube.

6. In a device of the character described, a spray bar for liquidscomprising a substantially horizontal hollow bar, a siphon tubecommunicating with said bar through the lower wall thereof and extendingtherebelow, a plurality of spray nozzles communicating with said barthrough the upper wall thereof, means to admit liquid to said siphontube, and meansestablishing communication between the portion oi thesiphon tube below the b'ar, and the ends of said bar.

7. In a device of the character described, a spray bar for liquidscomprising a substantially horizontal hollow bar, a siphon tubecommunicating with said bar through the lower wall thereof intermediatethe ends-of the bar and extending therebelow,l a plurality ofspray'nozzles communicating with said bar through the upper wallthereof, means to admit liquid to said bar through said siphon tube,means to suck the liquid from said bar through said siphon tube, andmeans establishing communication between the portion of the siphon tubebelow the bar, and the ends of said bar.

8. In a device of the character described, a spray bar for liquidscomprising a siphon tube having one leg connected to a source of liquidsupply, a substantially horizontal hollow bar connected at its lowerportion to the other leg of the siphon tube, and a plurality of spraynozzles communicating with said bar through the upper wall thereof. j

9. In a device of the character described, a spray bar for liquidscomprising a siphon tube having one leg connected to a source of liquidsupply, a substantially horizontal hollow bar con'- nected at its lowerportion to the otherleg of the siphon tube, a plurality of spray nozzlesconnected to said bar through the upper wall thereof, and means to suckliquid from said bar and nozzles through said siphon tube.

10. In a device of the character described, a spray bar for liquidscomprising a siphon tube having one leg connected to a source of liquidsupply, a substantially horizontal hollow bar connected at its lowerwall to the other leg of the siphon tube, a plurality of spray nozzlesconnected to said bar through the upper wall thereof, and a pipeconnecting the lower portion of said siphon tube to one end of thehollow bar.

11. In a device of the character described, a spray bar for liquidscomprising a siphon tube having one leg connected to a source of liquidlo to the'upper portion of said bar.

13. In a, device of the character described, a

Aamarte spray bar for liquids comprising a siphon tube having one legconnected to a source of liquid supply, a substantially horizontalhollow bar connected intermediate its ends at its lower portion with theother leg of the siphon tube, a

plurality of inverted U-shaped nozzles connected to the upper portion ofsaid bar, and a pair of inclined pipes connecting the lower portion ofthe siphon tube with the ends of the bar.

WALKER M. JAGOE.

